2013年10月28日 星期一

LAB17

<html>
<head>
</head>
<body id="body">
<form action="javascript:void(0);" id="exampleForm">
<input type="text" id="examplePass"/>
<input type="submit" />
</form>
</body>
<script>
document.getElementById("exampleForm").onsubmit = function(){
var passwordRegex =/^(-?\d+)(\.\d+)?[,](-?\d+)(\.\d+)?$/
if(!passwordRegex.test(document.getElementById("examplePass").value)){
console.log("Regex didn't match");
var notify = document.getElementById("notify");
if(notify === null){
notify = document.createElement("p");
notify.textContent = "error character";
notify.id ="notify";
var body =document.getElementById("body");
body.appendChild(notify);
}
}
};
</script>
</html>



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